WALPOLE HOUSE, CHISWICK MALL, LONDON, W4 2PS - £12,500,000

The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.

WALPOLE HOUSE is a very large extended detached house of 847m², built sometime before 1900, which could now be worth an estimated £22,354,307. It was last sold for £12,500,000 in May 2008, which was around 2102% above the average May 2008 detached price in the Hounslow local authority area. The most recent EPC inspection was August 2024, where the current energy rating was D, and the potential energy rating was C.

WALPOLE HOUSE Sold Prices

Land registry data shows two sales for WALPOLE HOUSE since 1^st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Hounslow local authority area for the corresponding sale date. Both of the two WALPOLE HOUSE sales were for above the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).

Date	Price	HPI Price	Variation from HPI
2008 30 MAY	£12,500,000	£567,564	2102% above HPI
2006 17 AUG	£7,250,000	£488,042	1386% above HPI

WALPOLE HOUSE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Hounslow local authority area over time, sourced from the HPI. The two WALPOLE HOUSE sales from August 2006 and May 2008 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the August 2006 sale was for 1386% above the HPI. So the extrapolation line tracks at 1386% above the HPI over time, until the May 2008 sale, where it rises to 2102% above the HPI. The line then continues to track at 2102% above the HPI.

What might WALPOLE HOUSE be worth now?

WALPOLE HOUSE might now be worth an estimated £22,354,307.

This is based on house price inflation of 78.8%, between May 2008 and February 2025, for detached houses, in the Hounslow local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 78.8% inflationary increase is applied to the most recent sale price for WALPOLE HOUSE of £12,500,000 on 30th May 2008. For the value to have increased from £12,500,000 to £22,354,307 over the seventeen years and three months to February 2025, the following assumptions must hold true:

• The value of WALPOLE HOUSE has moved in line with the HPI for detached houses in the Hounslow local authority area.
• The May 2008 sale price of £12,500,000 represented a fair market value for the property.
• The size, condition, and specification of WALPOLE HOUSE has not materially changed since May 2008.

How Large is WALPOLE HOUSE?

WALPOLE HOUSE is 847m², which includes three extensions, according to the EPC inspection conducted in August 2024. This puts it in the largest 10% of detached houses houses in Chiswick, based on EPC data. The below chart shows the distribution of detached houses houses by size in Chiswick, and where WALPOLE HOUSE lies on this distribution: More than 99% of detached houses houses are smaller than WALPOLE HOUSE, and less than 1% of houses are larger. Note that EPC data is not available for all properties in Chiswick.

WALPOLE HOUSE: Plot and Title Map

WALPOLE HOUSE sits on a plot of roughly 0.644 of an acre, or 2,608m². The below map shows the location of WALPOLE HOUSE, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of WALPOLE HOUSE). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

Where is WALPOLE HOUSE?

WALPOLE HOUSE is located on CHISWICK MALL in LONDON, in the W4 postcode district. The below map shows the position of WALPOLE HOUSE on CHISWICK MALL.